Results 41 to 50 of about 35,877,441 (279)

Aproximación a la gestión económica integral de las obras por procesos productivos: elaboración del modelo COP de control de costes de construcción

open access: yesInformes de la Construccion, 2017
La profunda crisis económica sufrida recientemente en España ha puesto de manifiesto la vulnerabilidad del Sector de la Construcción y la necesidad de desarrollar nuevas herramientas que incrementen su eficacia.
M. V. Montes   +3 more
doaj   +1 more source

The cross section for e+e−→e+e−e+e−

open access: yesNuclear Physics B, 1984
Abstract A calculation of the cross section for the process e + e − →e + e − e + e − is presented. The complete set of 36 Feynman diagrams is taken into account and is computed at the amplitude level, neglecting the electron mass. Emphasis is placed on the requirement for any such calculation that it can be done numerically in a fast and simple way.
openaire   +2 more sources

A Software Tool for Evaluating Unmanned Autonomous Systems [PDF]

open access: yesThe ITEA Journal of Test and Evaluation 41 (3), pp. 188-195, 2020, 2021
The North Carolina Agriculture and Technical State University (NC A&T) in collaboration with Georgia Tech Research Institute (GTRI) has developed methodologies for creating simulation-based technology tools that are capable of inferring the perceptions and behavioral states of autonomous systems.
arxiv  

The ALICE experiment at the CERN LHC

open access: yes, 2003
ALICE (A Large Ion Collider Experiment) is a general-purpose, heavy-ion detector at the CERN LHC which focuses on QCD, the strong-interaction sector of the Standard Model. It is designed to address the physics of strongly interacting matter and the quark-
K. Aamodt   +499 more
semanticscholar   +1 more source

CD4+CD25+ Immunoregulatory T Cells Suppress Polyclonal T Cell Activation In Vitro by Inhibiting Interleukin 2 Production

open access: yesJournal of Experimental Medicine, 1998
Peripheral tolerance may be maintained by a population of regulatory/suppressor T cells that prevent the activation of autoreactive T cells recognizing tissue-specific antigens.
A. Thornton, E. Shevach
semanticscholar   +1 more source

?. ?. ????e?e? ? ?. M. ?????e????? - ??e??e???e????? ???e??????

open access: yesStudia Slavica, 2005
Turgenev's and Dostoevsky's novels, analysed in their relation to the future modernism, are studied both from the morphological standpoint (The Smoke) and the anthropological standpoint (The Newly Cleared Land, Brothers Karamazov-Artsibashev's Saninor Solovyov's Silver Dove).The main attention is paid to the problematic heroes, most of whom had to ...
openaire   +2 more sources

T. E. Harris' contributions to interacting particle systems and percolation

open access: yes, 2011
Interacting particle systems and percolation have been among the most active areas of probability theory over the past half century. Ted Harris played an important role in the early development of both fields.
Liggett, Thomas M.
core   +1 more source

Logical–Mathematical Foundations of a Graph Query Framework for Relational Learning

open access: yesMathematics, 2023
Relational learning has attracted much attention from the machine learning community in recent years, and many real-world applications have been successfully formulated as relational learning problems.
Pedro Almagro-Blanco   +2 more
doaj   +1 more source

Evaluación de tierras para reforestación (Horche, Guadalajara) mediante un índice de Productividad Agraria

open access: yesEstudios Geográficos, 2002
[es] La Unión Europea está promoviendo la reforestación en aquellos países, como España, con áreas vulnerables a la degradación y a la desertificación. El propósito de este artículo es delimitar y definir, mediante un método de Evaluación de Tierras, las
C. Hontoria Fernández   +2 more
doaj   +1 more source

Predimensionado óptimo de secciones mixtas de hormigón y acero: criterios del Eurocódigo 4

open access: yesInformes de la Construccion, 2001
El cálculo de vigas mixtas de hormigón y acero se realiza a partir de un predimensionado de la sección que se ajusta por un proceso iterativo hasta alcanzar una aproximación razonable; la definición inicial de la sección es compleja por las numerosas ...
José Monfort Lleonart   +2 more
doaj   +1 more source

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